/* Responsive Design - Mobile First Approach */

/* Extra Small Devices (phones, 576px and down) */
@media (max-width: 575.98px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-sm);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
        padding: 0 var(--spacing-md);
    }
    
    .ip-address {
        flex-direction: column;
        text-align: center;
        padding: var(--spacing-lg);
    }
    
    .ip-value {
        font-size: var(--font-size-2xl);
        word-break: break-all;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .stat-card {
        padding: var(--spacing-md);
    }
    
    .tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        border-bottom: none;
        border-right: 3px solid transparent;
    }
    
    .tab-btn.active {
        border-bottom: none;
        border-right-color: var(--primary-color);
    }
    
    .tab-content {
        padding: var(--spacing-lg);
    }
    
    .info-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .info-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
        text-align: left;
    }
    
    .lookup-form {
        flex-direction: column;
        max-width: 100%;
    }
    
    .lookup-input {
        margin-bottom: var(--spacing-sm);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: center;
    }
}

/* Small Devices (landscape phones, 576px and up) */
@media (min-width: 576px) and (max-width: 767.98px) {
    .header-content {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }
    
    .nav {
        order: 3;
        flex-basis: 100%;
        justify-content: center;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .ip-address {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .ip-value {
        font-size: var(--font-size-2xl);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .lookup-form {
        max-width: 400px;
    }
}

/* Medium Devices (tablets, 768px and up) */
@media (min-width: 768px) and (max-width: 991.98px) {
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .info-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Large Devices (desktops, 992px and up) */
@media (min-width: 992px) and (max-width: 1199.98px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .info-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Extra Large Devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    .container {
        max-width: 1200px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .info-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Landscape Orientation Adjustments */
@media (orientation: landscape) and (max-height: 500px) {
    .main {
        padding: var(--spacing-lg) 0;
    }
    
    .hero {
        margin-bottom: var(--spacing-lg);
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-lg);
    }
    
    .ip-address {
        padding: var(--spacing-md);
    }
    
    .stats-grid {
        margin-bottom: var(--spacing-lg);
    }
}

/* High DPI / Retina Display Adjustments */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .ip-value,
    .info-value {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .theme-toggle,
    .copy-btn,
    .lookup-section {
        display: none;
    }
    
    .main {
        padding: 0;
    }
    
    .hero,
    .details-section {
        break-inside: avoid;
        margin-bottom: var(--spacing-lg);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stat-card,
    .info-item {
        border: 1px solid #000;
        break-inside: avoid;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
        color: #000;
        background: #fff;
    }
}

/* Reduced Motion Preferences */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .spinner {
        animation: none;
        border: 3px solid var(--border-color);
        border-top: 3px solid var(--primary-color);
    }
}

/* Dark Mode Specific Responsive Adjustments */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #0f172a;
        --bg-secondary: #1e293b;
        --bg-tertiary: #334155;
        --bg-card: #1e293b;
        
        --text-primary: #f8fafc;
        --text-secondary: #cbd5e1;
        --text-muted: #94a3b8;
        
        --border-color: #334155;
        --border-hover: #475569;
    }
}

/* Focus and Accessibility Improvements for Mobile */
@media (max-width: 767.98px) {
    button:focus,
    input:focus,
    a:focus {
        outline: 3px solid var(--primary-color);
        outline-offset: 3px;
    }
    
    .nav-link {
        padding: var(--spacing-md);
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .copy-btn,
    .lookup-btn,
    .theme-toggle {
        min-height: 44px;
        min-width: 44px;
    }
    
    .tab-btn {
        min-height: 48px;
    }
}

/* Hover Effects - Only on Devices That Support Hover */
@media (hover: hover) and (pointer: fine) {
    .stat-card:hover {
        transform: translateY(-2px);
    }
    
    .copy-btn:hover {
        transform: scale(1.05);
    }
    
    .nav-link:hover {
        transform: translateY(-1px);
    }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
    .stat-card,
    .info-item {
        padding: var(--spacing-lg);
    }
    
    .copy-btn,
    .lookup-btn,
    .theme-toggle {
        padding: var(--spacing-md);
    }
    
    .nav-link {
        padding: var(--spacing-md) var(--spacing-lg);
    }
}

/* Container Queries (for modern browsers) */
@supports (container-type: inline-size) {
    .stats-grid {
        container-type: inline-size;
    }
    
    @container (max-width: 600px) {
        .stats-grid {
            grid-template-columns: 1fr;
        }
    }
    
    @container (min-width: 601px) and (max-width: 900px) {
        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }
    
    @container (min-width: 901px) {
        .stats-grid {
            grid-template-columns: repeat(4, 1fr);
        }
    }
}

/* Safe Area Insets for Devices with Notches */
@supports (padding: max(0px)) {
    .header {
        padding-left: max(var(--spacing-md), env(safe-area-inset-left));
        padding-right: max(var(--spacing-md), env(safe-area-inset-right));
    }
    
    .container {
        padding-left: max(var(--spacing-md), env(safe-area-inset-left));
        padding-right: max(var(--spacing-md), env(safe-area-inset-right));
    }
    
    .footer {
        padding-bottom: max(var(--spacing-lg), env(safe-area-inset-bottom));
    }
}

/* Utility Classes for Responsive Design */
.hide-mobile {
    display: block;
}

.show-mobile {
    display: none;
}

@media (max-width: 767.98px) {
    .hide-mobile {
        display: none;
    }
    
    .show-mobile {
        display: block;
    }
}

.hide-tablet {
    display: block;
}

.show-tablet {
    display: none;
}

@media (min-width: 768px) and (max-width: 991.98px) {
    .hide-tablet {
        display: none;
    }
    
    .show-tablet {
        display: block;
    }
}

.hide-desktop {
    display: block;
}

.show-desktop {
    display: none;
}

@media (min-width: 992px) {
    .hide-desktop {
        display: none;
    }
    
    .show-desktop {
        display: block;
    }
}

/* Text Size Adjustments for Better Readability */
@media (max-width: 575.98px) {
    .stat-label {
        font-size: var(--font-size-xs);
    }
    
    .stat-value {
        font-size: var(--font-size-base);
    }
    
    .info-label {
        font-size: var(--font-size-sm);
    }
    
    .info-value {
        font-size: var(--font-size-sm);
    }
}

/* Loading State Responsive Adjustments */
@media (max-width: 575.98px) {
    .loading {
        padding: var(--spacing-lg);
    }
    
    .spinner {
        width: 32px;
        height: 32px;
    }
    
    .loading p {
        font-size: var(--font-size-sm);
    }
}